How to Async Replace Substring in Tcl - Code Snippet

# Task: Async Replace Substring
# Language: Tcl

proc async_replace_substring() {
    # Implementation for Async Replace Substring
    set result = ...; # Initialize variable
    # TODO: Implement core logic here
    # Step 1: Prepare data
    # Step 2: Process Async Replace Substring
    puts("Done");
}